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Long-Term Debt (Details) (Textual)
 12 Months Ended 12 Months Ended 12 Months Ended 1 Months Ended 2 Months Ended 12 Months Ended
Dec. 31, 2011
USD ($)
Dec. 31, 2010
USD ($)
Dec. 31, 2009
USD ($)
Feb. 23, 2011
USD ($)
Bond
Dec. 31, 2011
Medium term credit facilities [Member]
USD ($)
Dec. 31, 2011
ST-Ericsson [Member]
USD ($)
Dec. 31, 2011
R and D Project In France [Member]
USD ($)
Dec. 31, 2011
R and D Project In France [Member]
EUR (€)
Dec. 31, 2010
R and D Project In France [Member]
EUR (€)
Dec. 31, 2011
R and D projects in Italy [Member]
USD ($)
Dec. 31, 2011
R and D projects in Italy [Member]
EUR (€)
Dec. 31, 2011
Uncommitted short-term credit facilities [Member]
USD ($)
Feb. 28, 2014
1.50% convertible bonds due 2016 [Member]
USD ($)
Feb. 29, 2012
1.50% convertible bonds due 2016 [Member]
USD ($)
Feb. 28, 2006
1.50% convertible bonds due 2016 [Member]
USD ($)
Dec. 31, 2011
1.50% convertible bonds due 2016 [Member]
USD ($)
Bond
Dec. 31, 2010
1.50% convertible bonds due 2016 [Member]
USD ($)
Bond
Rate
Dec. 31, 2009
1.50% convertible bonds due 2016 [Member]
USD ($)
Bond
Dec. 31, 2007
1.50% convertible bonds due 2016 [Member]
Rate
Dec. 31, 2011
Credit Facilities [Member]
EUR (€)
Bond
Dec. 31, 2010
Credit Facilities [Member]
EUR (€)
Bond
Mar. 31, 2006
1.82%, due 2013, floating interest rate at Euribor + 0.40% [Member]
EUR (€)
Long-Term Debt (Textual)                                            
Zero coupon unsubordinated convertible bonds, Principal amount                             $ 1,131,000,000             € 500,000,000
Zero coupon unsubordinated convertible bonds, yield                             1.50%              
Bonds issued percentage of principal value                             100% of Principal with a yield to maturity              
Proceeds from long-term debt 3,000,000 1,000,000 1,000,000                       974,000,000              
Conversion rate of Bonds Per one thousand Dollar Face value of Bond                                 43.833898   43.363087      
Bonds convertible number of equivalent shares                                 42,694,216          
Redemption Price of convertible bonds                         1,126.99 1,093.81                
Company can call the bonds at any time after March 10, 2011 Subject to conditions                               Company’s share price exceeding 130% of the accreted value divided by the conversion rate for 20 out of 30 consecutive trading days.            
Redemption for cash at the principal amount Conditions                               The Company may redeem for cash at the principal amount at issuance plus accumulated gross yield all, but not a portion, of the convertible bonds at any time if 10% or less of the aggregate principal amount at issuance of the convertible bonds remain outstanding in certain circumstances or in the event of changes to the tax laws of the Netherlands or any successor jurisdiction            
Short-term borrowings 400,000,000                                          
Number of bonds repurchased                               290,000 386,000 98,000   76,000 74,000  
Principal value of purchased bonds                               318,000,000 417,000,000 106,000,000        
Cash consideration 108,000,000 218,000,000 134,000,000                         314,000,000 410,000,000 103,000,000   107,000,000 98,000,000  
Gain on the repurchase of bonds                               4,000,000 7,000,000 3,000,000        
Bonds redeemed for cash       41,000                                    
Cash consideration for bond 44,000,000                                          
Bond principal amount       45,000,000                                    
Issue price as percentage of principal amount                                           99.873%
Coupon rate of Note                                           Three-month Euribor plus 0.40%
Line of Credit Facility [Line Items]                                            
Unutilized committed medium term credit facilities         487,000,000 400,000,000 341,000,000 350,000,000 245,000,000 380,000,000 250,000,000 569,000,000                    
Amount paid back             $ 147,000,000     $ 108,000,000